One of many central subjects of ACIM is the thought of forgiveness. The Class shows that forgiveness is not merely pardoning somebody due to their wrongdoings, but instead, it's the acceptance that there is nothing to forgive. It asserts that what we see as wrongdoings are finally caused by our own misperceptions and projections. In flexible the others, we are, actually, forgiving ourselves. ACIM emphasizes that forgiveness is really a road to inner peace and liberation from the burdens of resentment and anger.

Still another simple principle of A Course in Miracles could be the proven fact that the physical earth can be an illusion. It posits which our sensory experiences are unreliable indications of truth and that correct notion can only be performed via a change in a course in miracles and peace  . The Program distinguishes involving the "real world," which is really a state of peace and oneness beyond the material world, and the "confidence world," indicated by concern, separation, and conflict. In accordance with ACIM, our primary purpose is to wake from the desire of the confidence earth and return to the awareness of our divine nature.

ACIM also presents the idea of the Sacred Spirit as helpful information and instructor within the individual. This spiritual existence sometimes appears as the source of enthusiasm and wisdom, helping people make choices that cause us nearer to truth and from illusion. The Course teaches that through our willingness to hear the Sacred Spirit's guidance, we can accessibility a further understanding of our function and the road to healing.

The Workbook for Pupils in A Class in Wonders contains 365 lessons, one for each day of the year. These lessons are made to help pupils internalize the teachings and apply them with their everyday lives. They frequently contain meditative and contemplative workouts, affirmations, and insights on the concepts presented in the text. The objective of these everyday classes is always to change the student's understanding and mind-set steadily, major them towards circumstances of correct forgiveness, internal peace, and spiritual awakening.